Activity 2: Classification of Matter Substance Classification (Element, Evidence/ Rationale compound, solution, heterogeneous mixture Water Soda water Air Granola Oxygen $3. Aluminum metal has a huge variety of uses. It is not found as a metal in nature, but in rock known as bauxite. The process of getting aluminum metal out of bauxite is depicted below (in a simplified form). Bauxite is Crushed bauxite is treated with The Aluminum oxide is CRUSHED HOT Sodium hydroxide processed and exposed to solution. The resulting a positive and negative Aluminum hydroxide is electrode. ALUMINUM eventually heated to form metal is produced ALUMINUM OXIDE View image in color at the Student Resources website. a) Which process(es) is/ are a result of a physical change? b) Which process(es) is/ are a result of a chemical reaction? c) Identify at least one heterogeneous mixture in the process. d) Identify at least one compound in the process. e) Identify at least one element in the process. CR-25Unit CR S4. Artists often take advantage of chemistry to produce amazing results. A jeweler can take a piece of copper metal and transform it into a "patina" pendant using the following process. Study this process, depicted below, and identify an element, a compound, a solution, a heterogeneous mixture, a physical change, and a chemical reaction. A clean sheet of The scratch copper sheet is placed copper metal is In a mixture of vinegar and salt for scratched with steel 30-40 minutes and then removed wool without drying. After a few hours... View image in color at the Student Resources website.Unit CR Materials (Matter) Uniform Solutions Heterogeneous in composition No (Homogeneous Mixtures) (individual 'pieces Mixtures (Example: zinc iodine are INVISIBLE)? (Example: zinc and in water) lodine before reaction) Yes Can physical Yes changes separate material into 2+ substances with different properties? No Can chemical Elements No reactions separate Yes Compounds material into 2+ substances "Pure Substances" "Pure Substances" with different properties? S1. How is a solution different from a heterogeneous mixture? What evidence would you need to decide if something was a solution vs a heterogeneous mixture? S2. For each of the following substances, classify each as an element, a compound, a solution, or a heterogeneous mixture. Give your rationale for each